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    <title>Document</title>
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<body>
    <script>
  
        // let set = new Set();

        // let set = new Set("凯哥哈哈真的是凯哥好慌啊");
        // set.add("飞起来了 A ");
        // console.log(set);


        // let arr = [1,2,2,2,5,4,7,6,5,8,9,6];
        // let set = new Set(arr);
        // console.log(set)
        // console.log([...set]);



        let map = new Map();
        let key = "name";
        let value = "阿飞";
        map.set(key, value);

        console.log(map);
        console.log(map.get(key));
    </script>
</body>
</html>